单选题（）of the following conditions will cause a vessel’s bottom to be subjected to tension stresses.AConcentration of weight aftBConcentration of weight forwardCConcentration of weight amidshipsDConcentration of weight at both ends of the vessel
单选题
（）of the following conditions will cause a vessel’s bottom to be subjected to tension stresses.
A
Concentration of weight aft
B
Concentration of weight forward
C
Concentration of weight amidships
D
Concentration of weight at both ends of the vessel
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